I put a new tensioner and belt on my car. Now the new tensioner is noisy and bounces and clacks. Its especially bad when A/C is on. Now, I'll admit I didnt use a Motorcraft tensioner and bought one from Rock Auto. Just looking for thoughts and opinions. Pretty sure I'm gonna have to change the damn tensioner, which sucks cause its new and Rock Auto won't do anything cause its been 30 days.